In March we started a unit called, Soap, Film and Bubbles where students are learning about surface tension, and the chemistry of soap and water. Students have done experiments with bubble clusters, where they made clusters of three and four and found different ways to make shapes. They learned about surface tension and were mainly looking at the shapes of clusters. In another experiment the students learned about surface tension by using soap film and string, placing the string on the soap film students popped the soap film inside the string without breaking the surface tension of the whole soap film. This was a hard experiment because students learned they could not go fast when breaking the surface tension inside the string. Students used play-doh to create soap molecules and water molecules after we read about the chemistry of soap and water, then using the molecules that they created as hydrogen bonds then added to soap molecules to weaken the hydrogen bond. In our next class students will learn about air pressure and how bubbles float comparing it to how airplanes fly. Students will be experimenting with bubbles and trying different ways to keep it in the air. For our final class students will be learning about the colors in bubbles and soap films – comparing and contrasting and using the color sequence to know when a bubble will pop. Students have been enjoying the different experiments and activities during classes.